Mathematics + English = 4

Found by Martin Gardner about the what the combination of mathematics and English will lead to.
There is an interesting fact about the english translation of the numbers. The number of characters in the english translation of any number leads to the number FOUR , from where you cannot go anywhere. Now follow the following little steps to know the wonder:

1. Choose any number and convert it to its English counterpart.
2. Count the number of characters in it including spaces , hyphens.
3. Take the new number and follow again follow steps 1 and 2.

You will finally reach the number FOUR which have the number of characters as 4 and now from here you cannot move forward.

Example:
Lets take 225
225 — Two hundred and twenty Five — Number of characters : 27
27 — Twenty Seven — Number of characters : 12
12 — Twelve — Number of characters : 6
6 —- Six — 3
3 —- Three — 5
5 —- Five –4
4 —- Four — 4
4 —- Four — 4
4 —- Four — 4

Nowhere to go now.